diff options
Diffstat (limited to 'Documentation/technical')
| -rw-r--r-- | Documentation/technical/api-parse-options.txt | 12 | ||||
| -rw-r--r-- | Documentation/technical/api-run-command.txt | 54 | ||||
| -rw-r--r-- | Documentation/technical/pack-protocol.txt | 10 | ||||
| -rw-r--r-- | Documentation/technical/protocol-capabilities.txt | 4 |
4 files changed, 61 insertions, 19 deletions
diff --git a/Documentation/technical/api-parse-options.txt b/Documentation/technical/api-parse-options.txt index 50f9e9a..312e3b2 100644 --- a/Documentation/technical/api-parse-options.txt +++ b/Documentation/technical/api-parse-options.txt @@ -115,6 +115,9 @@ There are some macros to easily define options: `OPT__ABBREV(&int_var)`:: Add `\--abbrev[=<n>]`. +`OPT__COLOR(&int_var, description)`:: + Add `\--color[=<when>]` and `--no-color`. + `OPT__DRY_RUN(&int_var)`:: Add `-n, \--dry-run`. @@ -183,6 +186,15 @@ There are some macros to easily define options: arguments. Short options that happen to be digits take precedence over it. +`OPT_COLOR_FLAG(short, long, &int_var, description)`:: + Introduce an option that takes an optional argument that can + have one of three values: "always", "never", or "auto". If the + argument is not given, it defaults to "always". The `--no-` form + works like `--long=never`; it cannot take an argument. If + "always", set `int_var` to 1; if "never", set `int_var` to 0; if + "auto", set `int_var` to 1 if stdout is a tty or a pager, + 0 otherwise. + The last element of the array must be `OPT_END()`. diff --git a/Documentation/technical/api-run-command.txt b/Documentation/technical/api-run-command.txt index b26c281..44876fa 100644 --- a/Documentation/technical/api-run-command.txt +++ b/Documentation/technical/api-run-command.txt @@ -51,7 +51,7 @@ The functions above do the following: ENOENT; a diagnostic is printed only if .silent_exec_failure is 0. . Otherwise, the program is run. If it terminates regularly, its exit - code is returned. No diagnistic is printed, even if the exit code is + code is returned. No diagnostic is printed, even if the exit code is non-zero. . If the program terminated due to a signal, then the return value is the @@ -64,8 +64,8 @@ The functions above do the following: `start_async`:: Run a function asynchronously. Takes a pointer to a `struct - async` that specifies the details and returns a pipe FD - from which the caller reads. See below for details. + async` that specifies the details and returns a set of pipe FDs + for communication with the function. See below for details. `finish_async`:: @@ -135,7 +135,7 @@ stderr as follows: .in: The FD must be readable; it becomes child's stdin. .out: The FD must be writable; it becomes child's stdout. - .err > 0 is not supported. + .err: The FD must be writable; it becomes child's stderr. The specified FD is closed by start_command(), even if it fails to run the sub-process! @@ -180,17 +180,47 @@ The caller: struct async variable; 2. initializes .proc and .data; 3. calls start_async(); -4. processes the data by reading from the fd in .out; -5. closes .out; +4. processes communicates with proc through .in and .out; +5. closes .in and .out; 6. calls finish_async(). +The members .in, .out are used to provide a set of fd's for +communication between the caller and the callee as follows: + +. Specify 0 to have no file descriptor passed. The callee will + receive -1 in the corresponding argument. + +. Specify < 0 to have a pipe allocated; start_async() replaces + with the pipe FD in the following way: + + .in: Returns the writable pipe end into which the caller + writes; the readable end of the pipe becomes the function's + in argument. + + .out: Returns the readable pipe end from which the caller + reads; the writable end of the pipe becomes the function's + out argument. + + The caller of start_async() must close the returned FDs after it + has completed reading from/writing from them. + +. Specify a file descriptor > 0 to be used by the function: + + .in: The FD must be readable; it becomes the function's in. + .out: The FD must be writable; it becomes the function's out. + + The specified FD is closed by start_async(), even if it fails to + run the function. + The function pointer in .proc has the following signature: - int proc(int fd, void *data); + int proc(int in, int out, void *data); -. fd specifies a writable file descriptor to which the function must - write the data that it produces. The function *must* close this - descriptor before it returns. +. in, out specifies a set of file descriptors to which the function + must read/write the data that it needs/produces. The function + *must* close these descriptors before it returns. A descriptor + may be -1 if the caller did not configure a descriptor for that + direction. . data is the value that the caller has specified in the .data member of struct async. @@ -205,8 +235,8 @@ because this facility is implemented by a pipe to a forked process on UNIX, but by a thread in the same address space on Windows: . It cannot change the program's state (global variables, environment, - etc.) in a way that the caller notices; in other words, .out is the - only communication channel to the caller. + etc.) in a way that the caller notices; in other words, .in and .out + are the only communication channels to the caller. . It must not change the program's state that the caller of the facility also uses. diff --git a/Documentation/technical/pack-protocol.txt b/Documentation/technical/pack-protocol.txt index 7950eee..9a5cdaf 100644 --- a/Documentation/technical/pack-protocol.txt +++ b/Documentation/technical/pack-protocol.txt @@ -149,7 +149,7 @@ advertisement list at all, but other refs may still appear. The stream MUST include capability declarations behind a NUL on the first ref. The peeled value of a ref (that is "ref^{}") MUST be immediately after the ref itself, if presented. A conforming server -MUST peel the ref if its an annotated tag. +MUST peel the ref if it's an annotated tag. ---- advertised-refs = (no-refs / list-of-refs) @@ -261,7 +261,7 @@ Without either multi_ack or multi_ack_detailed: * upload-pack sends "NAK" on a flush-pkt if no common object has been found yet. If one has been found, and thus an ACK - was already sent, its silent on the flush-pkt. + was already sent, it's silent on the flush-pkt. After the client has gotten enough ACK responses that it can determine that the server has enough information to send an efficient packfile @@ -271,9 +271,9 @@ as common with the server, or the --date-order queue is empty), or the client determines that it wants to give up (in the canonical implementation, this is determined when the client sends 256 'have' lines without getting any of them ACKed by the server - meaning there is nothing in common and -the server should just send all it's objects), then the client will send +the server should just send all of its objects), then the client will send a 'done' command. The 'done' command signals to the server that the client -is ready to receive it's packfile data. +is ready to receive its packfile data. However, the 256 limit *only* turns on in the canonical client implementation if we have received at least one "ACK %s continue" @@ -286,7 +286,7 @@ ACK after 'done' if there is at least one common base and multi_ack or multi_ack_detailed is enabled. The server always sends NAK after 'done' if there is no common base found. -Then the server will start sending it's packfile data. +Then the server will start sending its packfile data. ---- server-response = *ack_multi ack / nak diff --git a/Documentation/technical/protocol-capabilities.txt b/Documentation/technical/protocol-capabilities.txt index 1892d3e..fd1a593 100644 --- a/Documentation/technical/protocol-capabilities.txt +++ b/Documentation/technical/protocol-capabilities.txt @@ -60,7 +60,7 @@ doesn't, as in the following diagram: If the client wants x,y and starts out by saying have F,S, the server doesn't know what F,S is. Eventually the client says "have d" and the server sends "ACK d continue" to let the client know to stop -walking down that line (so don't send c-b-a), but its not done yet, +walking down that line (so don't send c-b-a), but it's not done yet, it needs a base for x. The client keeps going with S-R-Q, until a gets reached, at which point the server has a clear base and it all ends. @@ -181,7 +181,7 @@ delete-refs ----------- If the server sends back the 'delete-refs' capability, it means that -it is capable of accepting an zero-id value as the target +it is capable of accepting a zero-id value as the target value of a reference update. It is not sent back by the client, it simply informs the client that it can be sent zero-id values to delete references. |